Frederik Winkelsdorf
Lead Developer IOS (Freelance)
Norderstedt, Schleswig-Holstein, Germany
Summary
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SeniorFrederik Winkelsdorf is a seasoned iOS lead and freelance developer with over 11 years of professional experience, currently serving as Lead Developer iOS at DAK-Gesundheit while running his own consulting practice. He blends hands-on app development with IT consulting, delivering robust, user-focused iOS solutions for enterprise clients from his base in Norderstedt, Germany. Known for steady freelance work since the mid-1990s, he pairs deep platform knowledge with practical project delivery and client-facing communication. Frederik’s profile suggests a commitment to long-term client relationships and dependable, consultancy-grade engineering rather than flashy open-source visibility.
11 years of coding experience
English, German, French, Italian
Stackoverflow
4,481reputation
410kreached
30answers
12questions
openssl
top-5%
uialertcontroller
top-5%
swift
top-5%
animation
top-5%
objective-c
top-5%
uinavigationbar
top-5%
Github Skills (200)
native-module10
command-line-tool10
camera10
spice10
delphi10
volume-rendering10
gitignore10
collada10
fbx10
zsh10
object-mapping10
php10
administration10
cryptography10
cocoapods10
Programming languages (15)
Github contributions (5)
phrase/ios-sdk
Sep 2019 - Jan 2023
Phrase Over the Air iOS SDK
Contributions:17 releases, 50 commits, 16 PRs in 3 years 4 months
l10nphraseios-sdktranslationphraseapp
winkelsdorf/winkelsdorf.github.io
Feb 2023 - Mar 2025
Contributions:14 pushes, 3 branches in 2 years 1 month
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